US Bridges

SH 121 over Bois Darc Creek

Fair

Fannin County, Texas · 1.8 MI SW of SH 11 · Structure no. 010750054902011

Built
1958
67 years old, rebuilt 1967
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
161 ft
1 main span
Daily traffic
8,509
2020 count
Owner
State
State Highway Agency

About this bridge

SH 121 over Bois Darc Creek is a concrete stringer/multi-beam or girder carrying SH 121 over Bois Darc Creek in Fannin County, Texas. It was built in 1958 and reconstructed in 1967, so it is 67 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,509 vehicles a day, roughly 12% of them trucks, projected to reach 9,310 by 2040. The structure is 161 ft (49.1 m) long and 47 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSH 121
CrossesBois Darc Creek
Location1.8 MI SW of SH 11
RouteState Highway 121
CountyFannin County
StateTexas
Coordinates33.46679, -96.27779
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadOther
Structure length161 ft (49.1 m)
Longest span40 ft (12.2 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,509 (2020)
Projected traffic9,310 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 121 over Bois Darc Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1967.

What condition is SH 121 over Bois Darc Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.

How much traffic does SH 121 over Bois Darc Creek carry?

About 8,509 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is SH 121 over Bois Darc Creek?

The structure is 161 ft (49.1 m) long with a longest span of 40 ft (12.2 m) and a deck 47 ft wide.

Who owns SH 121 over Bois Darc Creek?

It is owned by the State Highway Agency.